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Finding the Fourth Proportional to 7,992.32, 11,988.48 and 2,799.68

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Solution

The fourth proportional to 7,992.32, 11,988.48 and 2,799.68 is: 4,199.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.32 : 11,988.48 = 2,799.68 : x
  2. Step 2: Convert to fraction form
    7,992.32/11,988.48 = 2,799.68/x
  3. Step 3: Cross multiply
    7,992.32x = 11,988.48 × 2,799.68
  4. Step 4: Simplify right side
    7,992.32x = 33,563,907.69
  5. Step 5: Solve for x
    x = 33,563,907.69/7,992.32
  6. Step 6: Final answer
    x = 4,199.52

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.